null.hpp

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#pragma once
 
/**
 * NullMeanFieldExporter — the "no export" format.
 *
 * Null Object implementation of MeanFieldExporter: export_to_directory() is a
 * no-op (no files are created). Selected by
 * create_mean_field_exporter("none") so the SCF/NSCF flavors can call the
 * export interface unconditionally instead of branching on the format name.
 */
 
#include <string>
 
#include "io/mean_field_export/init.hpp"
 
namespace q3 {
 
class NullMeanFieldExporter : public MeanFieldExporter {
  public:
    void export_to_directory(const MeanFieldRecord& /*record*/,
                             const std::string& /*directory*/) const override {}
 
    [[nodiscard]] std::string name() const override {
        return "none";
    }
};
 
} // namespace q3